No cluster galaxy is complete without asteroid belts consisting of clusters of numerous cosmic bodies of natural origin.
Common asteroid belts are not as harmless as they seem. A spaceship that accidentally flies into such a belt probably won't be able to get out of it without getting a couple of dents on the hull.
Despite all the danger, remnants of rare resources can often be found on individual comets and asteroids. But it is worth paying attention to the fact that the collection of resources by this method is not the most rational because of the risks associated with it.